Small EDRK-Rich Factor 1

**Semantic type:** Amino Acid, Peptide, or Protein

**Definition:** Small EDRK-rich factor 1 (110 aa, ~12 kDa) is encoded by the human SERF1A and SERF1B genes. This protein may play a role in the development of the spinal cord, vertebrae and surrounding musculature.

**Synonyms:** - Protein 4F5 - SERF1 - SERF1A - SERF1B - SMA Modifier 1 - h4F5